5 Common Retirement Planning Mistakes (and How to Avoid Them)

Nobody blows up their retirement with one big dramatic decision. It's almost always a handful of small, boring habits that quietly compound — the same way good habits do, just working against you instead of for you. Here are the five I see trip people up most often.

1. Leaving the employer match on the table

This one's first because it's the cheapest to fix and the most expensive to ignore. If your employer matches 401(k) contributions and you're putting in less than the match threshold, you're walking past free money every single paycheck. Fix this before touching anything else on this list.

2. Assuming retirement will be shorter than it actually is

A 65-year-old today has a genuinely good shot at living into their 90s. A lot of people plan around 15 to 20 years of retirement almost by default, without ever really sitting down and doing the math — then find themselves stretching the same savings over 25 or 30 years instead. Plan for longer than feels strictly necessary. Being pleasantly surprised costs you nothing.

3. Getting the risk level backwards

Some people go too conservative decades before retirement, parking money in cash where inflation quietly eats away at it. Others do the opposite right before retiring — staying aggressively invested and getting caught by a downturn at the worst possible moment. Both mistakes usually trace back to reacting to whatever the market did last week, instead of following a plan that actually matches how many years you have left.

4. Underestimating healthcare costs

Healthcare tends to be one of the biggest line items people get wrong in a retirement budget, especially before Medicare eligibility kicks in and especially anywhere near long-term care. If your retirement budget is just your current healthcare spending extended forward with no cushion, you're probably being optimistic — and this is one area I'd rather see people over-budget than under.

5. Never actually checking the numbers

Honestly, this might be the most common one of all five. It's easy to save "whatever feels reasonable" for years without ever comparing that number against what you'll actually need. A small shortfall is easy to close a decade out. The exact same shortfall, discovered the year before you retire, leaves you with a lot fewer options.

The fix for #5, at least, is simple

Our retirement and FIRE calculator runs exactly this comparison — a target based on your desired retirement income, checked against your projected savings given your current contributions and timeline, plus the monthly increase needed if there's a gap. Takes about two minutes, and it's a lot cheaper than finding out the hard way.

This article is for educational purposes only and is not financial advice. Consult a licensed financial advisor for guidance specific to your situation.